中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

5 records (took 0.009 seconds)

    METHOD OF PRODUCING MICROFIBRILLATED CELLULOSE
    3.
    发明申请
    METHOD OF PRODUCING MICROFIBRILLATED CELLULOSE 审中-公开
    生产微晶纤维素的方法

    公开(公告)号：US20150337493A1

    公开(公告)日：2015-11-26

    申请号：US14758708

    申请日：2013-12-30

    Applicant: Stora Enso OYJ

    Inventor： Isto HEISKANEN ,  Henri KASTINEN ,  Anna KAUPPI ,  Jukka KANKKUNEN ,  Lars AXRUP ,  Cecilia LAND HENSDAL ,  Heidi SAXELL ,  Kaj BACKFOLK

    IPC: D21H17/00 ,  D21H11/18 ,  D21H11/04 ,  D21C9/00

    CPC classification number: D21C9/007 ,  C08B15/08 ,  C08L1/04 ,  D21D1/20 ,  D21H11/04 ,  D21H11/18 ,  D21H17/005

    Abstract: The invention relates to methods of producing microfibrillated cellulose (MFC). According to the invention a fibrous pulp suspension is fibrillated mechanically at a consistency of less than 12.5%, dewatered to raise the consistency of the fibrillated suspension to at least 12.5%, and then subjected in the dewatered condition to further fibrillation. Alternatively an initially fibrillated fibrous pulp suspension may be dewatered and fibrillated in the dewatered condition, after which these dewatering and fibrillating steps are repeated one or more times so that pulp consistency is increased for each fibrillation step. The goals of raising the consistency between subsequent fibrillations are energy saving and an increased aspect ratio in MFC. The invention even comprises uses of the MFC product, e.g. as an additive for papermaking furnish or injection molded plastic composites.

    Abstract translation: 本发明涉及微纤化纤维素（MFC）的制造方法。 根据本发明，纤维纸浆悬浮液以小于12.5％的稠度机械原纤化，脱水以将原纤化悬浮液的稠度提高至至少12.5％，然后在脱水条件下进一步原纤化。 或者，最初原纤化的纤维纸浆悬浮液可以在脱水条件下脱水和原纤化，之后将这些脱水和原纤化步骤重复一次或多次，以使每个原纤化步骤的纸浆稠度增加。 提高后续原纤化之间的一致性的目标是在MFC中节能和增加的纵横比。 本发明甚至包括MFC产品的用途，例如， 作为造纸配料或注塑塑料复合材料的添加剂。

    A METHOD OF MANUFACTURING A FILM HAVING LOW OXYGEN TRANSMISSION RATE VALVES
    4.
    发明申请
    A METHOD OF MANUFACTURING A FILM HAVING LOW OXYGEN TRANSMISSION RATE VALVES 审中-公开

    公开(公告)号：US20200173109A1

    公开(公告)日：2020-06-04

    申请号：US16614164

    申请日：2018-05-17

    Applicant: Stora Enso OYJ

    Inventor： Esa SAUKKONEN ,  Isto HEISKANEN ,  Katja LYYTIKÄINEN ,  Kaj BACKFOLK

    IPC: D21H11/18 ,  D21H25/04 ,  B32B23/06 ,  B32B23/08 ,  B32B5/06

    Abstract: A method of manufacturing a film having an oxygen transmission rate (OTR) value in the range of 0.1 to 200 cc/m2*24 h at 23° C., 50% relative humidity (RH), and an OTR value in the range of 0.1 to 2000 cc/m2*24 h at 38° C. at 85% RH, comprising at least 60% by weight nanocellulose based on the weight of the total amount of fibers in the film, wherein the method comprises the steps of, providing an aqueous suspension comprising said nanocellulose; forming a web from said aqueous suspension; calendering said web at a line load of at least 40 kN/m, and at a temperature of at least 60° C. wherein said film is formed and said web has an OTR value in the range of 50 to 10 000 cc/m2*24 h at 23° C., 50% RH before said calendering step, or more preferably in the range of 500 to 5000 cc/m2*24 h at 23° C., 50% RH before said calendering step.

Patent Agency Ranking